Question

I need help with answering 30x + 4 = 86

Answer 1

30x + 4 = 86
You need to isolate the x value so use the opposite of 4 (which is negative 4) to rid of the 4 (remember to make it even by doing this on both sides)

30x + 4 + -4 = 86 + -4
30x = 82
Now isolate the x once more by using inverse operations. Since the x is being multiplied by 30 we shall use division to cancel the 30 out. (Do on both sides)

30x/30 = 82/30
X = 2.733333333333333 or 41/15

Sorry if this is incorrect.

Answer 2

Question:

Solve the following equation:

30x + 4 = 86​

Solution:

Let the following equation:

`30x\text{ + 4 = 86}`

if we subtract 4 from both sides of the equation we get:

`30x\text{ = 86}-4`

this is equivalent to:

`30x\text{ = }82`

solving for x (divide both sides of the equation by 30), we get:

`x\text{ = }(82)/(30)`

this is equivalent to:

`x\text{ = }(82)/(30)=\text{ 2.73}`

Then, we can conclude that the correct answer is:

`x\text{ = 2.73}`